wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

In heterozygous condition, the individual expression of both the alleles in the phenotype is exemplified by:


A

Colorblindness

No worries! We‘ve got your back. Try BYJU‘S free classes today!
B

AB blood groups

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C

Rh factor

No worries! We‘ve got your back. Try BYJU‘S free classes today!
D

A and B blood group

No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B

AB blood groups


The correct option is B:

Explanation of the correct option:

  1. The expression of phenotypes from both parents in a heterozygous state is called codominance.
  2. Examples: ABO blood group, sickle cell anemia, and seed coats of lentils.

Explanation of the incorrect options:

Option A:

Colour blindness is inherited as a recessive trait on the X chromosome which is known in genetics as X-linked recessive inheritance.

Option C:

The Rh positive gene is dominant over the Rh negative gene, therefore Rh positive takes over.

Option D:

  1. The A and B genes are dominant and the O gene is recessive.
  2. For example, if an O gene is paired with an A gene, the blood type is A.

Final answer: In heterozygous condition, the individual expression of both the alleles in the phenotype is exemplified by AB blood groups.


flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Pedigree Analysis
BIOLOGY
Watch in App
Join BYJU'S Learning Program
CrossIcon